Just an angled dry box feeder. Mount one on each side of the box.

Need:

• M3 x 10mm screws and nuts.
• Push in Quick Touch to Connect Fitting 4mm OD Tube x 1/8" Male NPT Thread Pneumatic Straight Joints/Coupler.

Update:
In case you plan to use the same container I used I uploaded a template for the Snapware 40-Cup container to make it easier for you to mount the feeder.